document.write( "Question 570802: How many kilos of tea worth Rs.72 per kg should be mixed with 10kg of tea worth Rs.90 per kg to produce a mixture which will cost Rs.78 per kg \n" ); document.write( "
Algebra.Com's Answer #367788 by mananth(16946)\"\" \"About 
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---------------- Price ---------------- quantity
\n" ); document.write( "Tea type I 90 ----------------10 pounds
\n" ); document.write( "Tea type II 72 ----------------x pounds
\n" ); document.write( "Mixture 78 ---------------- 10+x pounds
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\n" ); document.write( "sum of individual components = quantity in mixture
\n" ); document.write( "90*10+72x=78(10 +x)
\n" ); document.write( "900+72x =780+78 x
\n" ); document.write( "72x -78 x=-120
\n" ); document.write( "-6x=-120
\n" ); document.write( " x= -120 / -6
\n" ); document.write( " x= 20
\n" ); document.write( "20 pounds of Tea type II costing Rs. 72 has to be added
\n" ); document.write( "m.ananth@hotmail.ca
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